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Biogenic silver nanoparticles from Solanum trilobatum leaf extract and assessing their antioxidant and antimicrobial potential 从三叶茄叶提取物中提取生物银纳米粒子并评估其抗氧化和抗菌潜力
IF 3.8 Q2 CHEMISTRY, PHYSICAL Pub Date : 2024-11-09 DOI: 10.1016/j.chphi.2024.100771
M. Abareethan , R. Sathiyapriya , Marimuthu E. Pavithra , S. Parvathy , R. Thirumalaisamy , T. Selvankumar , Arunachalam Chinnathambi , Hesham S. Almoallim
Current study establishes synthesis of AgNPs from Solanum trilobatum by a simple microwave protocol. Major phytoconstituents such as solasodine, solanine, solanidine were present in the leaves extract of Solanum trilobatum were examined and explored by GC-MS analysis. In vitro anti-oxidant analysis of green synthesized AgNPs from Solanum trilobatum leaf extract using DPPH and ABTS assays reveals that IC50 values (14.10 µg/ml and 12.90 µg/ml) equipotent anti-oxidant activity with reference standard trolox IC50 values (9.10 µg/ml and 9.80 µg/ml) respectively. UV–Visible spectroscopy analysis of green synthesized AgNPs shown its maximal absorbance of at 420 nm, which affirms that green mediated synthesis of silver nanoparticles from Solanum trilobatum. The results of FT-IR spectral analysis showed that flavonoids, sterols, saponin alkaloids, terpenoids, and polysaccharides were existed in Solanum trilobatum aqueous plant leaf extract, which were responsible for the reduction and subsequent capping of AgNPs. X-ray diffraction method confirmed that silver nanoparticles have spherical crystals with face-centered cubic structure. Zeta potential spectroscopy revealed the stability of green synthesized silver nanoparticles. The results of the particle size analyzer confirm that the average size of the green-synthesised AgNPs is 50 nm. Scanning electron microscope images of green synthesized silver nanoparticles show the formation of spheres and stones. HR-TEM results further affirm that sphere size of AgNPs. Further green synthesized AgNPs screened for its anti-microbial potential against bacterial cultures of E.coli (MTCC 452), P. aeruginosa (MTCC 1688), S. typhi (MTCC 733) and K. pneumonia (MTCC 39) and their result revealed that zone of inhibition 19 ± 0.11, 17 ± 0.08, 13 ± 0.07 and 16 ± 0.11 mm respectively. Finally, the explored phytocompounds from Solanum trilobatum and standard drugs tetracyclin was screened against four clinical pathogen membrane target proteins reveals that excellent binding affinity with maximal docking score -9.4 kcal/mol by solasodine against target protein Klebsiella pneumonia AcrB with the BDM91288 efflux pump (PDB ID 8P1I). Significance of silver nanoparticles (AgNPs) synthesis from Solanum trilobatum offers significant antimicrobial and antioxidant benefits. Silver nanoparticles from S. trilobatum act as promising candidates for therapeutic applications, particularly in combating infections and oxidative damage in biomedical applications.
目前的研究采用简单的微波法从三叶茄中合成 AgNPs。通过气相色谱-质谱(GC-MS)分析,研究并探讨了三叶茄叶提取物中存在的主要植物成分,如茄碱、茄碱和茄苷。使用 DPPH 和 ABTS 法对从三叶茄叶提取物中合成的绿色 AgNPs 进行体外抗氧化分析,结果显示其 IC50 值(14.10 微克/毫升和 12.90 微克/毫升)与参考标准特罗环的 IC50 值(9.10 微克/毫升和 9.80 微克/毫升)分别相当。绿色合成的 AgNPs 的紫外可见光谱分析显示,其最大吸光度为 420 纳米,这证实了由绿色介导的三叶茄银纳米粒子的合成。傅立叶变换红外光谱分析结果表明,三叶茄水生植物叶提取物中存在黄酮类、甾醇类、皂苷生物碱类、萜类和多糖类物质,这些物质是还原和封装 AgNPs 的主要成分。X 射线衍射法证实银纳米粒子为面心立方结构的球形晶体。Zeta 电位光谱显示了绿色合成银纳米粒子的稳定性。粒度分析仪的结果证实,绿色合成的银纳米粒子的平均粒度为 50 nm。绿色合成银纳米粒子的扫描电子显微镜图像显示形成了球状和石状。HR-TEM 结果进一步证实了 AgNPs 的球形尺寸。此外,绿色合成的 AgNPs 还对大肠杆菌(MTCC 452)、铜绿假单胞菌(MTCC 1688)、伤寒杆菌(MTCC 733)和肺炎双球菌(MTCC 39)等细菌培养物进行了抗微生物潜力筛选,结果显示抑制区分别为 19 ± 0.11、17 ± 0.08、13 ± 0.07 和 16 ± 0.11 mm。最后,将所研究的三叶茄植物化合物和标准药物四环素针对四种临床病原体膜靶蛋白进行了筛选,结果显示,索拉索定与靶蛋白肺炎克雷伯菌 AcrB 与 BDM91288 外排泵(PDB ID 8P1I)的结合亲和力极佳,最大对接得分为 -9.4 kcal/mol。从三叶茄中合成银纳米粒子(AgNPs)具有显著的抗菌和抗氧化作用。从三叶茄中提取的银纳米粒子有望成为治疗应用的候选物质,特别是在生物医学应用中对抗感染和氧化损伤方面。
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引用次数: 0
Recent development on neem (azadirachta indica) biomass absorbent: Surface modifications and its applications in water remediation 印楝(azadirachta indica)生物质吸收剂的最新发展:表面改性及其在水修复中的应用
IF 3.8 Q2 CHEMISTRY, PHYSICAL Pub Date : 2024-11-08 DOI: 10.1016/j.chphi.2024.100773
Pragya Singh , Shashank Sharma , Kalpana Singh , Pramod K. Singh , Faisal Islam Chowdhury , M.Z.A. Yahya , S.N.F. Yusuf , Markus Diantoro , Famiza Abdul Latif , N.B. Singh
This review paper discusses the latest advances in transfiguring Azadirachta indica (neem) biomass into an adsorbent and how it can be used to clean the environment. As an economical and environmentally favorable adsorbent material, neem biomass has become increasingly popular due to its bioactive properties and abundance. The review breaks down modification techniques into chemical and physical processes. Important physical changes covered include preactivation, carbonization, and using fluidized bed technologies and rotary kilns. It has been shown that these methods greatly improve the surface properties of neem biomass, which makes it better at absorbing things and holding more. The changes that were made also have an effect on the adsorption kinetics and isotherms, which helps us understand the adsorption rates and equilibrium behaviors of the changed adsorbents better. Neem biomass adsorbents are illustrated through their versatility and efficacy in the removal of organic pollutants, dyes, and heavy metals from effluent. This is illustrated through specific applications. Additionally, computational studies and artificial intelligence are looked into to see if they can help us understand how adsorption works at the molecular level, improve the efficiency of modification processes, and guess how adsorption will behave. The review also talks about the research gaps and suggests areas for future research. The review emphasizes the crucial importance of integrating experimental and computational methods to enhance the performance of the modified neem biomass and increase its environmental cleaning potential.
本综述论文讨论了将 Azadirachta indica(楝树)生物质转化为吸附剂的最新进展,以及如何将其用于清洁环境。作为一种既经济又环保的吸附材料,楝树生物质因其生物活性特性和丰富的资源而越来越受欢迎。本综述将改性技术分为化学和物理过程。其中涉及的重要物理变化包括预活化、碳化以及使用流化床技术和回转窑。研究表明,这些方法大大改善了楝树生物质的表面特性,使其更善于吸收和保持更多的物质。所做的改变也会对吸附动力学和等温线产生影响,这有助于我们更好地理解改变后的吸附剂的吸附速率和平衡行为。楝树生物质吸附剂在去除污水中的有机污染物、染料和重金属方面的多功能性和有效性说明了这一点。具体应用说明了这一点。此外,还对计算研究和人工智能进行了探讨,以了解它们是否能帮助我们理解分子层面的吸附作用,提高改性过程的效率,并猜测吸附的行为方式。综述还谈到了研究空白,并提出了未来的研究领域。综述强调了整合实验和计算方法对于提高改性楝树生物质的性能和增加其环境清洁潜力的极端重要性。
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引用次数: 0
Lead-free halide double perovskites for sustainable environmental applications 用于可持续环境应用的无铅卤化物双包晶石
IF 3.8 Q2 CHEMISTRY, PHYSICAL Pub Date : 2024-11-07 DOI: 10.1016/j.chphi.2024.100770
Ruby Jindal , Archana Tripathi , Chandra Mohan , Alka Garg , Rajender S. Varma
The development of renewable energy sources has become a crucial objective in today's world due to increasing environmental concerns and the depletion of fossil fuels. Solar energy has emerged as a promising alternative. In recent years, there has been a significant focus on perovskite solar cells due to their remarkable power conversion efficiencies and their ability to be produced in a cost-effective manner. These cells have attracted considerable attention from researchers and industry professionals alike. However, traditional perovskite materials often contain toxic lead, raising concerns about their environmental impact and long-term sustainability. This article highlights the environmental concerns associated with lead-based perovskite materials and explores the advantages, challenges, and potential of lead-free halide double perovskites as sustainable alternatives for achieving an enlightening and sustainable future in the field of photovoltaics. Lead-free halide perovskites have been an area of active research in the field of nanotechnology and material science due to their potential for various applications. We provide an overview of perovskite solar cells as a promising technology, discussing their material properties and device performance. Furthermore, we present a comparative analysis between lead-based and lead-free perovskites, emphasizing the challenges and future perspectives associated with the development and implementation of lead-free alternatives. Through this analysis, we aim to shed light on the potential of lead-free halide double perovskites and inspire further research in the quest for environmentally friendly materials for solar energy applications.
由于环境问题日益严重和化石燃料日渐枯竭,开发可再生能源已成为当今世界的一个重要目标。太阳能已成为一种前景广阔的替代能源。近年来,包晶体太阳能电池因其卓越的功率转换效率和低成本生产的能力而备受关注。这些电池吸引了研究人员和业界专业人士的极大关注。然而,传统的过氧化物晶体材料通常含有有毒的铅,引起了人们对其环境影响和长期可持续性的担忧。本文重点介绍了与铅基过氧化物材料相关的环境问题,并探讨了无铅卤化物双过氧化物作为可持续替代品的优势、挑战和潜力,以期在光伏领域实现一个富有启发性和可持续发展的未来。无铅卤化物包光体具有各种应用潜力,一直是纳米技术和材料科学领域的一个活跃研究领域。我们概述了包光体太阳能电池这一前景广阔的技术,讨论了其材料特性和设备性能。此外,我们还对铅基和无铅包晶石进行了比较分析,强调了与开发和实施无铅替代品相关的挑战和未来前景。通过这一分析,我们旨在阐明无铅卤化物双包晶石的潜力,并激励人们进一步研究太阳能应用中的环保材料。
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引用次数: 0
Rational design of some 1,3,4 trisubstituted pyrazole-thiazole derivatives to serve as MtInhA inhibitors using QSAR, ADMET, molecular docking, MM-GBSA, and molecular dynamics simulations approach 利用QSAR、ADMET、分子对接、MM-GBSA和分子动力学模拟方法,合理设计一些1,3,4三取代吡唑-噻唑衍生物作为MtInhA抑制剂
IF 3.8 Q2 CHEMISTRY, PHYSICAL Pub Date : 2024-11-03 DOI: 10.1016/j.chphi.2024.100769
Neha M. Mhetre , Aniket L. Bhatambrekar , D. Priya , Venkatesan Saravanan , Muthukumaradoss Kathiravan , Krishna S. Shevate , Kalirajan Rajagopal , Kalyani D. Asgaonkar , Trupti S. Chitre
Using computational approaches, the potential efficacy and specificity of 1,3,4 trisubstituted pyrazole derivatives as MtInhA inhibitors which will aid in rational drug design for tubercular therapy were forecasted. QSARINS software was used to investigate the ability of compound to inhibit MtInhA. Three noteworthy descriptors with significant correlations and impressive statistical values were identified by the produced QSAR model: Correlation of coefficient(R2)= 0.8789, Cross-validation leave one out correlation coefficient (Q2LOO)= 0.8402, Cross-validation leave-many-out correlation coefficient(Q2LMO)=0.7321, Concordance Correlation Coefficient for cross-validation(CCCtr)=0.9355, CCCext =0.888. The descriptor generated by the QSAR model includes Centered Broto-Moreau autocorrelation weighted by Sanderson electronegativities (ATSC1e), Radial distribution functions at 15.0 and 2.0 Å inter-atomic distances weighted by relative van der Waals volumes (RDF150v), Radial distribution function – 145/weighted by relative I-state (RDF145s). Using these, three descriptor model was developed and the designed compounds were evaluated for their MtInhA inhibitory activity. Further, ADMET prediction and Molecular docking studies were carried out using Schrodinger's Software. ADMET prediction were used to evaluate drug likeliness and molecular docking was used to determine the interactions of designed compounds with the target protein. After the docking studies, the compounds were subjected for MM-GBSA calculations and MD simulation. Among the designed compounds, AP2 had the strongest binding affinity towards the MtInhA enzyme. The result of this work helps to understand the key interactions between 1,3,4 trisubstituted pyrazole derivatives and MtInhA protein that may be necessary to develop new lead compounds against tuberculosis.
利用计算方法预测了 1,3,4 三取代吡唑衍生物作为 MtInhA 抑制剂的潜在功效和特异性,这将有助于结核病治疗的合理药物设计。采用 QSARINS 软件研究了化合物抑制 MtInhA 的能力。生成的 QSAR 模型确定了三个具有显著相关性和令人印象深刻的统计值的值得注意的描述因子:相关系数(R2)=0.8789;交叉验证剔除一个相关系数(Q2LOO)=0.8402;交叉验证剔除多个相关系数(Q2LMO)=0.7321;交叉验证相关系数(CCCtr)=0.9355;CCCext=0.888。QSAR 模型生成的描述符包括以桑德森电负性(ATSC1e)加权的居中布罗托-莫罗自相关性、以相对范德华体积(RDF150v)加权的 15.0 和 2.0 Å 原子间距离径向分布函数、以相对 I 态(RDF145s)加权的径向分布函数 - 145/。利用这些方法,建立了三个描述符模型,并对设计的化合物进行了 MtInhA 抑制活性评估。此外,还使用 Schrodinger 软件进行了 ADMET 预测和分子对接研究。ADMET 预测用于评估药物的相似性,分子对接用于确定设计化合物与目标蛋白质的相互作用。对接研究结束后,对化合物进行了 MM-GBSA 计算和 MD 模拟。在设计的化合物中,AP2 与 MtInhA 酶的结合亲和力最强。这项工作的结果有助于了解 1,3,4 三取代吡唑衍生物与 MtInhA 蛋白之间的关键相互作用,这可能是开发新的抗结核先导化合物所必需的。
{"title":"Rational design of some 1,3,4 trisubstituted pyrazole-thiazole derivatives to serve as MtInhA inhibitors using QSAR, ADMET, molecular docking, MM-GBSA, and molecular dynamics simulations approach","authors":"Neha M. Mhetre ,&nbsp;Aniket L. Bhatambrekar ,&nbsp;D. Priya ,&nbsp;Venkatesan Saravanan ,&nbsp;Muthukumaradoss Kathiravan ,&nbsp;Krishna S. Shevate ,&nbsp;Kalirajan Rajagopal ,&nbsp;Kalyani D. Asgaonkar ,&nbsp;Trupti S. Chitre","doi":"10.1016/j.chphi.2024.100769","DOIUrl":"10.1016/j.chphi.2024.100769","url":null,"abstract":"<div><div>Using computational approaches, the potential efficacy and specificity of 1,3,4 trisubstituted pyrazole derivatives as <em>Mt</em>InhA inhibitors which will aid in rational drug design for tubercular therapy were forecasted. QSARINS software was used to investigate the ability of compound to inhibit <em>Mt</em>InhA. Three noteworthy descriptors with significant correlations and impressive statistical values were identified by the produced QSAR model: Correlation of coefficient(R<sup>2</sup>)= 0.8789, Cross-validation leave one out correlation coefficient (Q<sup>2</sup>LOO)= 0.8402, Cross-validation leave-many-out correlation coefficient(Q<sup>2</sup>LMO)=0.7321, Concordance Correlation Coefficient for cross-validation(CCC<sub>tr</sub>)=0.9355, CCC<sub>ext</sub> =0.888. The descriptor generated by the QSAR model includes Centered Broto-Moreau autocorrelation weighted by Sanderson electronegativities (ATSC1e), Radial distribution functions at 15.0 and 2.0 Å inter-atomic distances weighted by relative van der Waals volumes (RDF150v), Radial distribution function – 145/weighted by relative I-state (RDF145s). Using these, three descriptor model was developed and the designed compounds were evaluated for their <em>Mt</em>InhA inhibitory activity. Further, ADMET prediction and Molecular docking studies were carried out using Schrodinger's Software. ADMET prediction were used to evaluate drug likeliness and molecular docking was used to determine the interactions of designed compounds with the target protein. After the docking studies, the compounds were subjected for MM-GBSA calculations and MD simulation. Among the designed compounds, <strong>AP2</strong> had the strongest binding affinity towards the <em>Mt</em>InhA enzyme. The result of this work helps to understand the key interactions between 1,3,4 trisubstituted pyrazole derivatives and <em>Mt</em>InhA protein that may be necessary to develop new lead compounds against tuberculosis.</div></div>","PeriodicalId":9758,"journal":{"name":"Chemical Physics Impact","volume":"9 ","pages":"Article 100769"},"PeriodicalIF":3.8,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Targeting the cyclin-dependent kinase family in anticancer drug discovery: From computational to experimental studies 在抗癌药物研发中瞄准细胞周期蛋白依赖性激酶家族:从计算研究到实验研究
IF 3.8 Q2 CHEMISTRY, PHYSICAL Pub Date : 2024-11-02 DOI: 10.1016/j.chphi.2024.100768
Priyanka Solanki , Shubhangi Sarwadia , Mohd Athar , Prakash C. Jha , Anu Manhas
Uncontrolled cell proliferation, primarily regulated by cyclin-dependent kinases (CDKs), is a critical driver of cancer progression, with dysregulation of CDKs contributing to various cancer types. CDKs have emerged as well-established targets for cancer therapy; however, traditional drug development methods have often proven to be time-consuming, challenging, and expensive. Recent advancements in CDK inhibitors (CDKIs) have shown immense clinical potential but many first-generation CDKIs face issues of non-selectivity and significant toxicity, limiting their clinical approval. To address these challenges, innovative computational approaches, particularly pharmacophore modeling, have the potential to streamline drug discovery. These methods can guide the selection of small molecules through target-specific structure-activity relationship (SAR) models and chemotypes screening across databases, thereby accelerating the identification of effective CDKIs. This review paper summarizes the latest developments on CDK inhibitors, highlights their structural features, and the methodologies (key databases & software tools) that can provide further suggestions for future drug development.
不受控制的细胞增殖主要由细胞周期蛋白依赖性激酶(CDKs)调控,它是癌症进展的关键驱动因素,CDKs 的失调导致了各种癌症类型。CDK 已成为公认的癌症治疗靶点;然而,传统的药物开发方法往往被证明是耗时、具有挑战性和昂贵的。CDK 抑制剂(CDKIs)的最新进展已显示出巨大的临床潜力,但许多第一代 CDKIs 面临着非选择性和显著毒性的问题,限制了它们的临床批准。为了应对这些挑战,创新的计算方法,特别是药效学建模,有可能简化药物发现过程。这些方法可以通过靶点特异性结构-活性关系(SAR)模型和跨数据库的化学型筛选来指导小分子的选择,从而加速有效 CDKIs 的鉴定。本综述总结了 CDK 抑制剂的最新进展,重点介绍了它们的结构特征,以及可为未来药物开发提供进一步建议的方法(关键数据库& 软件工具)。
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引用次数: 0
Characterization of green-synthesized carbon quantum dots from spent coffee grounds for EDLC electrode applications 利用废咖啡渣绿色合成的碳量子点在 EDLC 电极中的应用表征
IF 3.8 Q2 CHEMISTRY, PHYSICAL Pub Date : 2024-10-28 DOI: 10.1016/j.chphi.2024.100767
Grishika Arora , Nuur Syahidah Sabran , Chiam-Wen Liew , Chai Yan Ng , Foo Wah Low , Pramod K. Singh , Hieng Kiat Jun
This study investigates the green synthesis of carbon quantum dots (CQDs) from spent coffee grounds using a hydrothermal method, offering an eco-friendly, cost-effective, and straightforward approach to nanomaterial production. The synthesized CQDs, with particle sizes ranging from 1.6 to 4.4 nm, exhibited notable fluorescence, achieving quantum yields of 37.0 %, 54.3 %, and 63.3 % depending on the coffee source. Characterization technique, including XRD, FTIR, SEM, TEM, and BET, confirmed their structural suitability of these CQDs for energy storage applications. Their electrochemical performance was evaluated through cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS). Among the CQDs tested, those derived from spent Liberica coffee ground (medium roasted) demonstrated superior performance, with a discharging specific capacitance of 97.5 F/g, an energy density of 4.3 Wh/kg, and a power density of 130.6 W/kg at a current density of 0.5 A/g. Additionally, they exhibited acceptable internal resistance (Ra = 0.01 kΩ and Rab = 16.9 kΩ), indicating favourable charge transfer characteristics. These results underscore the enhanced energy storage potential of CQDs derived from spent coffee grounds. The findings not only highlight the excellent electrochemical performance but also support the viability of biomass waste as a valuable resource for advanced energy storage applications, promoting sustainable, eco-friendly technologies.
本研究采用水热法从废咖啡渣中绿色合成碳量子点(CQDs),为纳米材料的生产提供了一种环保、经济、直接的方法。合成的碳量子点粒径在 1.6 纳米到 4.4 纳米之间,具有显著的荧光特性,根据咖啡来源的不同,量子产率分别为 37.0%、54.3% 和 63.3%。包括 XRD、FTIR、SEM、TEM 和 BET 在内的表征技术证实了这些 CQDs 在结构上适用于储能应用。它们的电化学性能通过循环伏安法(CV)、电静态充放电法(GCD)和电化学阻抗光谱法(EIS)进行了评估。在测试的 CQDs 中,从废弃的 Liberica 咖啡粉(中度烘焙)中提取的 CQDs 表现出卓越的性能,其放电比电容为 97.5 F/g,能量密度为 4.3 Wh/kg,在 0.5 A/g 的电流密度下,功率密度为 130.6 W/kg。此外,它们还表现出可接受的内阻(Ra = 0.01 kΩ,Rab = 16.9 kΩ),这表明它们具有良好的电荷转移特性。这些结果表明,从废弃咖啡渣中提取的 CQDs 具有更强的储能潜力。这些发现不仅突显了其优异的电化学性能,还证明了生物质废弃物作为先进储能应用的宝贵资源的可行性,促进了可持续的生态友好型技术的发展。
{"title":"Characterization of green-synthesized carbon quantum dots from spent coffee grounds for EDLC electrode applications","authors":"Grishika Arora ,&nbsp;Nuur Syahidah Sabran ,&nbsp;Chiam-Wen Liew ,&nbsp;Chai Yan Ng ,&nbsp;Foo Wah Low ,&nbsp;Pramod K. Singh ,&nbsp;Hieng Kiat Jun","doi":"10.1016/j.chphi.2024.100767","DOIUrl":"10.1016/j.chphi.2024.100767","url":null,"abstract":"<div><div>This study investigates the green synthesis of carbon quantum dots (CQDs) from spent coffee grounds using a hydrothermal method, offering an eco-friendly, cost-effective, and straightforward approach to nanomaterial production. The synthesized CQDs, with particle sizes ranging from 1.6 to 4.4 nm, exhibited notable fluorescence, achieving quantum yields of 37.0 %, 54.3 %, and 63.3 % depending on the coffee source. Characterization technique, including XRD, FTIR, SEM, TEM, and BET, confirmed their structural suitability of these CQDs for energy storage applications. Their electrochemical performance was evaluated through cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS). Among the CQDs tested, those derived from spent <em>Liberica</em> coffee ground (medium roasted) demonstrated superior performance, with a discharging specific capacitance of 97.5 F/g, an energy density of 4.3 Wh/kg, and a power density of 130.6 W/kg at a current density of 0.5 A/g. Additionally, they exhibited acceptable internal resistance (<em>R</em><sub>a</sub> = 0.01 kΩ and <em>R</em><sub>ab</sub> = 16.9 kΩ), indicating favourable charge transfer characteristics. These results underscore the enhanced energy storage potential of CQDs derived from spent coffee grounds. The findings not only highlight the excellent electrochemical performance but also support the viability of biomass waste as a valuable resource for advanced energy storage applications, promoting sustainable, eco-friendly technologies.</div></div>","PeriodicalId":9758,"journal":{"name":"Chemical Physics Impact","volume":"9 ","pages":"Article 100767"},"PeriodicalIF":3.8,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
50 MeV Li- and 80 MeV Ni- ions induced modification in ZnO cauliflower like structure: Structural, optical and electrical studies 50 MeV 锂离子和 80 MeV 镍离子诱导氧化锌菜花状结构发生变化:结构、光学和电学研究
IF 3.8 Q2 CHEMISTRY, PHYSICAL Pub Date : 2024-10-28 DOI: 10.1016/j.chphi.2024.100762
Rohit Sharma , Payal Manzhi , Mahima Sheoran , Richa Krishna , Anit Dawar , Sunil Ojha , Ambuj Tripathi , Fouran Singh , Ritu Srivastava , Om Prakash Sinha
In this work, ZnO has been synthesized by co-precipitation method and mixed with 0.5 % of polyvinyl alcohol for the preparation of thin film. These ZnO thin films have been irradiated with lithium (Li) and nickel (Ni) beams of energy 50 MeV and 80 MeV respectively, at different fluence. XRD pattern reveals that the crystallite size varies from 41 nm to 21 nm for Li-irradiated ZnO and to 16 nm for Ni irradiated ZnO compared to pure ZnO. From UV–Visible spectroscopy, the bandgap of Li-irradiated ZnO to a fluence of 5 × 1012 ions/cm2 is found to be 3.20 eV However, for Ni-irradiated ZnO bandgap varies from 3.11 to 3.08 eV Upon investigation of PL spectra, it has been observed that broadening in the defect region is observed on increasing the Li fluence. However, Ni-ions lead to enhancement of defects with increase in fluence. Electrical properties reveal the enhancement of current in order of three for both the ions irradiated ZnO. Li irradiation leads to reduction in resistivity whereas Ni irradiation leads to the enhancement in ZnO resistivity. This suggests that the ion beam induced modification in ZnO lattice could be useful for tuning the optoelectronic properties & can be used for organic light emitting diodes.
这项研究采用共沉淀法合成了氧化锌,并与 0.5% 的聚乙烯醇混合制备薄膜。这些氧化锌薄膜分别用能量为 50 MeV 和 80 MeV 的锂(Li)和镍(Ni)光束以不同的通量进行辐照。XRD 图谱显示,与纯氧化锌相比,锂辐照氧化锌的晶粒大小从 41 纳米到 21 纳米不等,而镍辐照氧化锌的晶粒大小则为 16 纳米。紫外-可见光谱显示,锂离子辐照 ZnO 的带隙为 3.20 eV,而镍离子辐照 ZnO 的带隙则为 3.11 至 3.08 eV。然而,镍离子会导致缺陷随着通量的增加而增强。电学特性显示,两种离子辐照氧化锌后,电流都以三的顺序增强。锂离子辐照导致电阻率降低,而镍离子辐照则导致氧化锌电阻率升高。这表明,离子束诱导的氧化锌晶格改性可用于调整光电特性和amp;可用于有机发光二极管。
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引用次数: 0
Magnetic driven particle migration in PES membrane for phenol adsorption study: Isotherm and kinetic model perspective 用于苯酚吸附研究的 PES 膜中的磁驱动颗粒迁移:等温线和动力学模型视角
IF 3.8 Q2 CHEMISTRY, PHYSICAL Pub Date : 2024-10-28 DOI: 10.1016/j.chphi.2024.100766
Khairul Anwar Mohamad Said , M.P.M. Subasinghe , Md Rezaur Rahman , Ibrahim Yakub , Sinin Hamdan
Particle migration within the membrane was induced by magnetic exposure. For investigating the effect of magnetic on membrane structure, the adsorbent composition was varied between 3, 12, and 30wt%. The migrated zinc ferrite will accumulate near the membrane surface, and through different zinc ferrite compositions, the membrane structure is affected based on microscopy imaging. The phenol adsorption performance was conducted at different phenol concentrations; 5, 13, 30, 40, and 50 mg/L. Adsorption study reveals that initial concentration has influenced the phenol removal and can be ranked as follows (to the left has higher removal): 5>30>50>40>13 mg/L. Different zinc ferrite composition shows that the higher the ZnFe wt%, the better the phenol removal and listed as follows(to the left has higher removal): 3>12>30 wt%. The isotherm model discloses a high adsorption rate for normal membrane, although a similar number of adsorption sites (∼1 site) were utilized throughout the adsorption test. The kinetic model reveals that the magnetic induce membrane has a higher maximum adsorption capacity, a thin saturated monolayer with thrice more adsorption.
磁性曝露诱导颗粒在膜内迁移。为了研究磁性对膜结构的影响,吸附剂的成分在 3、12 和 30wt% 之间变化。迁移的锌铁氧体会聚集在膜表面附近,根据显微镜成像,不同的锌铁氧体成分会影响膜结构。在苯酚浓度分别为 5、13、30、40 和 50 mg/L 时,对苯酚的吸附性能进行了研究。吸附研究表明,初始浓度对苯酚的去除率有影响,可按以下顺序排列(左边的去除率较高):5>30>50>40>13 mg/L.不同的锌铁氧体组成表明,锌铁氧体重量百分比越高,对苯酚的去除效果越好,具体排名如下(靠左的去除效果较好):3>12>30 wt%。等温线模型显示,尽管在整个吸附试验中使用的吸附位点数量相似(1 个位点),但普通膜的吸附率很高。动力学模型显示,磁诱导膜具有更高的最大吸附容量,其饱和单薄层的吸附量是普通膜的三倍。
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引用次数: 0
Trapping light, revealing properties: Laser trapping as a powerful tool for photoluminescence spectroscopy 捕获光线,揭示特性:激光诱捕是光致发光光谱学的有力工具
IF 3.8 Q2 CHEMISTRY, PHYSICAL Pub Date : 2024-10-25 DOI: 10.1016/j.chphi.2024.100764
Dr. Md. Jahidul Islam, Nashin Sayara (Lecturer), Tasnia Talukder (Lecturer), Mohammad Harun-Ur-Rashid (Associate Professor)
Laser trapping, a non-contact technique for manipulating microscopic objects, has gained prominence in scientific research. When coupled with fluorescence spectroscopy, it offers a powerful tool for exploring material properties. This study demonstrates the application of laser trapping in the crystallization of MAPbBr3 perovskites and its simultaneous use for photoluminescence imaging. MAPbBr3 perovskites are a class of materials with exceptional optical properties, making them attractive for various optoelectronic applications. However, conventional excitation methods using UV light can lead to phase segregation and mechanical distortion of these materials. Two-photon excitation, on the other hand, offers advantages such as deeper penetration and reduced scattering interference. In this research, we utilize a 1064 nm continuous wave laser for both trapping and excitation purposes. The MAPbBr3 perovskite, with its absorption band ranging from 400 to 540 nm, exhibits two-photon excitation at 532 nm. By focusing the laser beam at the air-solution interface, we successfully crystallize MAPbBr3 perovskites from an unsaturated precursor solution. Simultaneously, the same laser source is used for photoluminescence imaging, allowing for real-time analysis of the crystal's emission properties. This approach eliminates the need for additional excitation sources and simplifies the experimental setup. The combination of laser trapping and two-photon excitation opens up new possibilities for studying perovskite materials. It provides a gentle and non-invasive method for manipulating and characterizing hybrid perovskites materials, paving the way for advancements in various fields such as optoelectronics and energy harvesting.
激光诱捕是一种用于操纵微观物体的非接触技术,在科学研究中的地位日益突出。与荧光光谱技术相结合,它为探索材料特性提供了一个强大的工具。本研究展示了激光捕集技术在 MAPbBr3 包晶石结晶中的应用,并将其同时用于光致发光成像。MAPbBr3 包晶石是一类具有特殊光学特性的材料,因此对各种光电应用具有吸引力。然而,传统的紫外光激发方法会导致这些材料发生相分离和机械变形。而双光子激发则具有穿透更深和减少散射干扰等优点。在这项研究中,我们利用波长为 1064 nm 的连续波激光器进行捕获和激发。MAPbBr3 包晶的吸收带范围为 400 至 540 nm,在 532 nm 波长处可进行双光子激发。通过将激光束聚焦于空气-溶液界面,我们成功地从不饱和前驱体溶液中结晶出了 MAPbBr3 包晶。同时,同一激光源还可用于光致发光成像,从而对晶体的发射特性进行实时分析。这种方法无需额外的激发光源,简化了实验装置。激光捕获和双光子激发的结合为研究包晶材料开辟了新的可能性。它为操作和表征混合包晶材料提供了一种温和、非侵入性的方法,为光电子学和能量收集等各个领域的进步铺平了道路。
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引用次数: 0
Evaluation of Taraxacum officinale phytoconstituents as potential JNK1 inhibitors: Perspectives from ADMET, molecular docking, molecular dynamics, and density functional theory 评估作为潜在 JNK1 抑制剂的蒲公英植物成分:ADMET、分子对接、分子动力学和密度泛函理论的观点
IF 3.8 Q2 CHEMISTRY, PHYSICAL Pub Date : 2024-10-22 DOI: 10.1016/j.chphi.2024.100757
Sphelele C. Sosibo , Hendrik G. Kruger , Wonder P. Nxumalo , Zimbili Zondi
The impact of activated c-Jun N-terminal kinase isoform JNK1 chemical pathways in insulin biosynthesis poses a potential health risk of glucose intolerance. Blocking the activity of JNK1 is a promising route for the design of anti-diabetic drugs and associated metabolic syndromes. In this study, 17 extracts of Taraxacum officinale were chosen to bind JNK1 and ascertain their modulatory activity. We employed molecular dynamics, density functional theory and three docking approaches: standard precision, extra precision and quantum polarized ligand docking. The best binding free energy results were obtained from the quantum polarized ligand docking, with myricetin (1) showing a docking score of -10.464 kcal/mol, while quercetin (2) and daphnetin (3) displayed values of -9.769 and -7.136 kcal/mol respectively. Following this, 100 ns molecular dynamics simulations with Desmond showed stabilization average root mean square deviations of 2.34, 2.87, and 2.88 Å for myricetin, quercetin and daphnetin. Further, molecular dynamics revealed complexes of myricetin (ΔG = -38.81 kcal/mol) and quercetin (ΔG = -34.99 kcal/mol) as the most stable inside the JNK1 interface. The energy gaps for myricetin, quercetin and daphnetin were estimated to be 6.17, 6.00 and 6.53 eV employing the M06–2X functional in PCM solvation. Further, myricetin showed the strongest intramolecular hydrogen bonding with -13.06 kcal/mol. This study provides insights into possible anti-type-2 diabetes properties of Taraxacum officinale targeting JNK1.
活化的 c-Jun N-terminal 激酶异构体 JNK1 化学途径对胰岛素生物合成的影响构成了葡萄糖不耐受的潜在健康风险。阻断 JNK1 的活性是设计抗糖尿病药物和相关代谢综合征的一条可行途径。本研究选择了 17 种蒲公英提取物与 JNK1 结合并确定其调节活性。我们采用了分子动力学、密度泛函理论和三种对接方法:标准精度对接、额外精度对接和量子极化配体对接。量子极化配体对接获得了最佳的结合自由能结果,其中杨梅素(1)的对接得分为-10.464 kcal/mol,而槲皮素(2)和水黄皮素(3)的对接得分分别为-9.769和-7.136 kcal/mol。随后,使用 Desmond 进行的 100 ns 分子动力学模拟显示,杨梅素、槲皮素和萘素的稳定化平均均方根偏差分别为 2.34、2.87 和 2.88 Å。此外,分子动力学显示,在 JNK1 界面内,三叶草素(ΔG = -38.81 kcal/mol)和槲皮素(ΔG = -34.99 kcal/mol)的复合物最为稳定。利用 PCM 溶胶中的 M06-2X 函数,估计出杨梅素、槲皮素和萘皮素的能隙分别为 6.17、6.00 和 6.53 eV。此外,杨梅素的分子内氢键最强,为 -13.06 kcal/mol。这项研究有助于深入了解蒲公英以 JNK1 为靶点可能具有的抗 2 型糖尿病特性。
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Chemical Physics Impact
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